Knapsack bag

class Product {

    constructor(name, price, weight) {
        this.name = name;
        this.price = price;
        this.weight = weight;
    }
}

class Basket {

    constructor() {
        this.maxWeight = 10;
        this.products = [];
        this.totalWeight = 0;
        this.totalPrice = 0;
    }

    addProduct(prd) {
        this.products.push(prd);
    }

    copyProduct() {
        var dpProducts = []
        for(var i in this.products) {
            var prd = this.products[i];
            dpProducts.push(new Product(prd.name, prd.price, prd.weight));
        }
        return dpProducts;
    }

    setProducts(products) {
        this.products = products;
    }

    getWeight() {
        this.totalWeight = 0;
        this.totalPrice = 0;
        for(var r in this.products) {
            var prd = this.products[r];
            this.totalWeight = this.totalWeight + prd.weight;
            this.totalPrice = this.totalPrice + prd.price;
        }
        return this.totalWeight ;
    }

    displayProducts() {
        console.log("------- basket start ------ total price: " + this.totalPrice);
        for(var r in this.products) {
            var prd = this.products[r];
            console.log(" prd: " + prd.name + ", price: " + prd.price + ", weight: " + prd.weight);
        }
        console.log("------- basket end ------ ");
    }
}


// what is the max price
var prdsList = [
    new Product("beer", 3, 2),
    new Product("vodka", 8, 12),
    new Product("cheese", 4, 5),
    new Product("nuts", 1, 4),
    new Product("ham", 2, 3),
    new Product("wiskey", 8, 13),
    new Product("pork", 10, 2),
    new Product("duck", 9, 3),
    new Product("chocko", 5, 4),
    new Product("chips", 6, 5),
];

var counterIndex = 0;
var productsLength = prdsList.length;
var allResults = [];
debugger;
while(counterIndex < productsLength) {
    var currentPrd = prdsList[counterIndex];
    var tempList = [];
    var newB = new Basket();
    newB.addProduct(currentPrd);
    tempList.push(newB);
    for(var u in allResults) {
        var cBasket = allResults[u];
        var nBasket = new Basket();
        nBasket.setProducts(cBasket.copyProduct());
        nBasket.addProduct(currentPrd);
        tempList.push(nBasket);
    }
    allResults = allResults.concat(tempList);
    counterIndex++;
}

console.log(allResults.length);
debugger;

for(var s in allResults) {
    var basket = allResults[s];
    var cw = (basket.getWeight());
}

function compare( a, b ) {
    if ( a.totalPrice < b.totalPrice ){
      return -1;
    }
    if ( a.totalPrice > b.totalPrice ){
      return 1;
    }
    return 0;
  }

  allResults.sort(compare);
  debugger;

  for(var s in allResults) {
    var basket = allResults[s];
    var cw = (basket.getWeight());
    if(cw <= 10) {
        basket.displayProducts();
    }
}